K&N air filter

with there power up kit you should have ordered when you bought your air filter...if not its a special oil and wash...there like $7 each...if you dont use it then you void the warrenty...
 
ya some guys i know just wash them and only run a pre filter like Outerwears instead of oiling them. i personally use light amount of oil and a outerwears pre filter. keeps fine dust out pretty good
 
Be sure it is a real K&N though, I thought mine was (came with the quad) but now I'm pretty sure it isn't. Apparently K&N oil works fine on true K&N filters, but on offbrands its thicker viscosity just plugs them up. Blew my mind.
 
ya thats so true, i used a knock off, i didnt really notice until my quad started runnin like sh*t, because it looked the same color and shape, same fins. but i found real ones have the metal strip that says K&N all down it. also, if you buy the automotive recharge kit, its a ton of cleaner and oil for a lil atv filter.